How does yabai decide where to open the next window?

[yannxaver]

First time using a tiling window manager.

The only consistency I see so far:

• If I have one window open and open a second one, it will open as a column next to the first one.

After that, it seems to get arbitrary. The third window might open in a third column or as a second row in the first column or as a second row in the second column.

It's not clear to me how this gets decided. At first, I thought the column for the third window gets picked based on which column is selected when opening it, but this also doesn't seem to be the case.